Waste segregation spool



Feb. 7, 1961 I R. A. BlNNS 2,970,789

WASTE SEGREGATION SPOOL Fiied Nov. '7, 1957 F YARN CARRIER SPINDLE SLOT l0 7 //6 I4- l r 3 INSERT NOTCH FOR 30 THREADING 1| I I8 I I /O WASTE T F R SEGREGATION N0 CH 0 SPOOL THRljgDING BELT 42 INVENTOR ROBERT A. BINNS United States Patent" F WASTE SEGREGATION SPOOL Robert A. Binns, Petersburg, Va., assignor to Allied Chemical Corporation, a corporation of New York Filed Nov. 7, 1957, Ser. No. 695,070

'4 Claims. (Cl. 242-1251) This invention relates to an auxiliary or waste segregation spool for use in winding or draw twisting operations. More particularly it relates to spools of this type which are suitable for use in the draw twisting of nylon type yarns.

A drawing operation for the purpose of either imparting tensile strength and/ or giving the individual fibers a desired filament size is quite common in the production of nylon type yarns. In the processing of such yarns it is also quite common to produce undrawn leads which must be segregated from the properly drawn and twisted nylon yarns. It is therefore deemed necessary to make certain that no undrawn yarn is placed on the wound package with the quality yarn. Means must therefore be provided for segregating this waste yarn while still providing a transfer tail at the base of the yarn carrier for use in further textile operations. While several methods have been devised and used on prior art apparatus for segregating waste material from the quality yarn which is wound on to the yarn carrier, these methods have in most instances been somewhat cumbersome. In'certain of the waste segregation spools of the prior art, hand winding was required in the starting operations, in others it was necessary to cut the yarn from the waste segregation spool at the time the yarn carrier was dofied in order to preserve the transfer tail, whereas in still others the waste was allowed to accumulate on the waste segregation spool which was not removed with each dofling of the yarn carrier and this led to very untidy looking spools which could only be cleaned after the machinery had been completely stopped.

It is an object of this invention to provide a waste segregation spool which is inexpensive and which can be removed with each yarn carrier.

It is a further object of this invention to provide a waste segregation spool which can be applied in a very simple manner and which will require no hand winding in starting.

It is still another object of this invention to provide a waste segregation spool which is interchangeable and will fit another standard yarn carrier.

It has been found that these objects and other objects incidental thereto can be attained by providing a pirn with a detachable waste segregation spool described herein.

In the accompanying drawings which show a preferred embodiment of the waste segregation spool of this invention: v

Figure 1 is a front elevation partly in section showing the general shape and position of the waste spool in combination with the yarn carrier and whorl assembly;

Figure 2 is a cross sectional view of the yarn carrier and insert shown in Figure 1 taken along line 22 of Figure 3;

Figure 3 is an end view of the yarn carrier and insert;

Figure 4 is a cross sectional view of the spool taken along line 4-4 of Figure 5, and

Figure 5 is an end view of the waste segregation spool.

The waste segregation spool 10 of this invention is preferably designed to snap fit on to the bottom of the yarn carrier 20 or on to insert 30 as shown in the drawings. The insert shown is a collar shaped piece which is provided with fiat surfaces 32 which help to position the yarn carrier and provide the driving surfaces by means of which rotational forces of the spindle 40 can be transmitted to the yarn carrier through the insert 34 This insert is not a necessary part of this invention since the yarn carrier could readily be fabricated in such manner that the positioning and driving surfaces are incorporated therein. In the particular embodiment shown in some detail in Figure 2 it can be seen that the yarn carrier when fitted on to the insert 30 does not completely cover the outside peripheral surface of the insert. This surface area 34 can be used to advantage as shown in Figure 1 for frictionally engaging the waste spool 10.

The waste spool which is shown in considerable detail in Figures 4 and 5 of the drawing is a collarlike element provided with an outwardly extending flange or lip 12 at its bottom and an inwardly radially extending projection 14 which is close to the top of the spool and which is specifically designed to provide a surface for frictionally engaging the surface area 34 of insert 30. This projection 14 is provided with one or more slots so as to give the material a yielding or elastic nature.

In the spool shown in the drawings two slots 16 are provided. This makes the inner surface area of the spool somewhat elastic and allows for a sung fit over the insert while yet permitting good gripping area. The waste spool is further provided with notches 18 and 19 which extend into the lip 12 forming a cleat on which to wind "material, since plastic is well adapted for this purpose and is preferable from an economic standpoint.

The assembly of the various parts with one another is shown in Figure 1 wherein a drive belt 42 is shown in driving relationship with whorl 44 and spindle-40, the insert 30 being mounted on the spindle in driving relationship therewith and the waste segregation spool 10 frictionally mounted on surface 34 of the insert 30 and the yarn carrier 20 in frictional engagement with the insert 30.

In the normal course of operation the am carrier 20 is usually provided with the insert 35) with the tube being snugly fitted as shown in Figures 2 and 3 of the drawings. The waste segregation spool is then snap fitted on to the surface 34 of the insert. These three elements are then ready for mounting on to spindle it? in drive relationship thereto. However, before this is done a spinning ring, which is not shown in the drawings of this application but is shown in detail in copending application Serial No. 690,820, filed October 17, 1957, is lowered to position for winding on the lowermost position. When the spindle brake is applied the yarn carrier insert and winding during the starting operation.

drawn yarn has been wound on the waste segregation spool the spinning ring is raised slightly until a few wraps are applied to the pirn or yarn carrier 20 just above 'the waste segregation spool, after which the spinningring can be raised to its regular position for winding the yarn package. The flange 12 at the bottom of the Waste segregation spool prevents the collected waste yarnfrom dropping off and coming loose during the winding period. After the yarn has been Wound on to the yarn carrier so as to form a completely wound package, the package is doffed and the waste segregation spool is removed therewith as it is still attached thereto. No cutting of the yarn is required during this period to preserve the transfer tail which in essence is the first few turns of good drawn yarn applied to the pirn immediately above the waste segregation spool prior to the winding of the complete package. The yarn package can then be handled by a person skilled in the art and the waste segregation spool removed from the insertleaving a transfer tail onthe yarn carrier.

From the above it can be seen that the waste segregation spool is a very simple device which can be made at very little cost and can readily be used in conjunction with the yarn carrier to permit the segregation of the waste material on to the spool and avoid any hand Since the spool and yarn carrier can be handled as aunit it is possible to doff the yarn from the spindle without resorting to a cutting operation and still preserve the transfer tail. The waste segregation spools of the invention furthermore are readily interchangeable since they are not tailored to fit any particular machine position and can readily be made to fit any standard carrier. These waste .segregation spools also make it possible to remove waste fyarn every time a yarn carrier is dotted. This aids in the cleanliness of the product. Since these spools furthermore can be made from plastic molding material which requires no machining it is obvious that they are inexpensive and add little to the cost of operations.

Although certain preferred embodiments of the apparatus of this invention have been disclosed for purpose of illustration, it will be evident that various changes and modifications may be made therein without departing from the scope and spirit of the invention.

I claim:

1. A waste segregation spool adapted for use in com- ,bination with a yarn carrier, said spool comprising a collarlike element about which yarn can be wound provided with a slitted portion extending partially through the axial length of said spool from the top end and adapted to frictionally engage one end of said yarn carrier, a flared edge at its bottom end only forming an outwardly extending rim and a cleat formed in said rim.

2. A waste segregation spool adapted for use in comoination with a yarn carrier and an insert therefor, said spool comprising a collarlike element with symmetrically placed slits partially through the axial length of said spool from the top end and adapted to snap fit onto said insert on one end of said yarn carrier, said spool having a flared edge at its bottom end only forming an out wardly extending rim and symmetrically placed cleats formed by opposed notches in said rim.

3. A waste segregation spool adapted for use in corn- .bination witha'yarn carrier, said spool comprising a collarlike element about which yarn can be wound with an inwardly extending radial projection toward the top end and an outwardly'extending rim at the other end only, said spool being further provided with a slitted portion extending partially through its axial length from the top end and a cheat formed by opposed notches in said outwardly extending rim.

4. A waste segregation spool adapted for use in combination with a yarn carrier, said spool comprising a collarlike element with an inwardly extending radial projection toward the top end for frictional attachment to said carrier and an outwardly extending rim at the other end only, said spool being further provided with two separate symmetrically placed slits extending partially "through the axial length of'said spool and cleats formed on. said outwardly extending rim by symmetrically spaced opposed notches.

References Cited in-the file of this patent UNITED STATES PATENTS 899,179 McCullough Sept. 22, 1908 1,821,556 Layfield 'Sept. 1, 1931 1}868g408 Clinton July 19, 1932 2,481,031 McDermott Sept. 6, 1949 2,625,334 Ewing et 'al. Jan. 13, 1953 FOREIGN PATENTS 332,936 Great Britain July 30, 193i) 

